User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Build ID: 20120905151427 Steps to reproduce: I run FF release channel with multiple profiles on the same computer and sync Passwords only through Mozilla Sync. On one profile, I get very very often a Sync error message at the bottom of the browser window, saying my password is incorrect, however this is the same one as what I have on other profiles. Actual results: request : https://scl2-sync855.services.mozilla.com/1.1/olaparent/info/collections First request: (Request-Line) GET /1.1/olaparent/info/collections HTTP/1.1 Host scl2-sync855.services.mozilla.com User-Agent Firefox/15.0.1 FxSync/1.17.0.20120905151427.desktop Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.8,fr;q=0.5,fr-fr;q=0.3 Accept-Encoding gzip, deflate Connection keep-alive Authorization Basic b2xhcGFyZW50OmM1Q2hhcmxlcyE= Cookie s_vsn_mozillaservicesmozcom_1=455423164708 no response but second request: (Request-Line) GET /1.1/olaparent/info/collections HTTP/1.1 Host scl2-sync855.services.mozilla.com User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.8,fr;q=0.5,fr-fr;q=0.3 Accept-Encoding gzip, deflate Connection keep-alive Cookie s_vsn_mozillaservicesmozcom_1=455423164708 Pragma no-cache Cache-Control no-cache Response (Status-Line) HTTP/1.1 401 Unauthorized WWW-Authenticate Basic realm="Sync" Content-Type text/html Strict-Transport-Security max-age=2419200 Date Wed, 17 Oct 2012 13:21:51 GMT Connection keep-alive Content-Length 358 Followed by a request to https://auth.services.mozilla.com/user/1.0/olaparent/node/weave (Status-Line) HTTP/1.1 200 OK Content-Type text/plain; charset=UTF-8 Strict-Transport-Security max-age=2419200 Date Wed, 17 Oct 2012 14:16:45 GMT Connection keep-alive X-Weave-Timestamp 1350483405.41 Content-Length 42 Expected results: Authentication should have worked That profile has pretty few addons compared to other ones Any clue on how to fix this ? (removing the "device" from Sync and adding it again didn't solve the issue)

This is likely bug 798430. Can you download Firefox Nightly from https://nightly.mozilla.org/ and let us know if that fixes it?

Thanks for your attention to this Did you notice that this happens only on one profile, but the same binaries run OK on other profiles ? Couldn't something be done at the profile level to restore normal behavior ? I'll try the nightly anyway

(In reply to Olivier Vit (just a reporter) from comment #2) > Thanks for your attention to this > Did you notice that this happens only on one profile, but the same binaries > run OK on other profiles ? There are lots of code problems that will only be exposed in some profiles. In this case, you might have an add-on that inserts itself into the HTTP request layer, or a cache or proxy configuration that's different, or a PAC file set. > Couldn't something be done at the profile level to restore normal behavior ? It's possible, but (a) we don't know what, and (b) we don't view asking our users to reconfigure their software as a valid solution. > I'll try the nightly anyway Thanks!

Is this working now in Firefox 17, Olivier?

I eventually trashed this profile and created a new one and it's OK Sorry but I didn't test with the nightly. My best